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  • Title: Persistent atrial standstill with atrial inexcitability.
    Author: Amram SS, Vagueiro MC, Pimenta A, Machado HB.
    Journal: Pacing Clin Electrophysiol; 1978 Jan; 1(1):80-9. PubMed ID: 83625.
    Abstract:
    Electrophysiologic studies including His bundle recording, atrial, and ventricular stimulation, were performed in three symptomatic patients with persistent atrial standstill of unknown etiology. The rhythm was junctional in two cases and ventricular in one. In two cases, evidence suggestive of associated impairment of the His bundle conduction system was found. The atria were inexcitable at multiple sites and no retrograde conduction to the right atrium could be elicited by ventricular pacing. Follow-up in the three cases, respectively for 48, 42 and 12 months after pacemaker implantation, revealed no return of spontaneous atrial electrical activity.
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